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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: CCD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCD/cc-pVTZ
 hartrees
Energy at 0K-835.874662
Energy at 298.15K 
HF Energy-835.299428
Nuclear repulsion energy141.911666
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCD/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3116 2909 7.54      
2 A 2739 2557 0.18      
3 A 1478 1380 0.82      
4 A 1223 1142 0.43      
5 A 921 860 3.75      
6 A 657 614 2.90      
7 A 297 277 9.52      
8 A 222 208 4.59      
9 B 3174 2963 1.20      
10 B 2738 2556 0.61      
11 B 1283 1198 21.73      
12 B 1022 954 16.71      
13 B 799 746 16.06      
14 B 725 677 0.42      
15 B 242 226 33.44      

Unscaled Zero Point Vibrational Energy (zpe) 10317.7 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 9633.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCD/cc-pVTZ
ABC
0.88704 0.10605 0.09908

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.783
S2 0.000 1.541 -0.179
S3 0.000 -1.541 -0.179
H4 0.878 -0.052 1.421
H5 -0.878 0.052 1.421
H6 1.093 1.261 -0.900
H7 -1.093 -1.261 -0.900

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81631.81631.08631.08632.36992.3699
S21.81633.08152.42222.35501.33863.0928
S31.81633.08152.35502.42223.09281.3386
H41.08632.42222.35501.75842.67523.2757
H51.08632.35502.42221.75843.27572.6752
H62.36991.33863.09282.67523.27573.3377
H72.36993.09281.33863.27572.67523.3377

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 96.206 C1 S3 H7 96.206
S2 C1 S3 116.047 S2 C1 H4 110.590
S2 C1 H5 105.687 S3 C1 H4 105.687
S3 C1 H5 110.590 H4 C1 H5 108.067
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability